[edk2-devel] [edk2] [PATCH v2 edk2-platforms] Platform/ARM/Drivers: Add Nor Flash Driver

[Ard Biesheuvel]

On Mon, 29 Apr 2019 at 14:21, Jagadeesh Ujja <jagadeesh.ujja at arm.com> wrote:
>
> hi Ard/Leif
>
> On Mon, Apr 29, 2019 at 2:22 PM Leif Lindholm <leif.lindholm at linaro.org> wrote:
> >
> > On Mon, Apr 29, 2019 at 10:17:17AM +0200, Ard Biesheuvel wrote:
> > > > I mean, the actually relevant bit is basically
> > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/mtd/afs.c,
> > > > isn't it?
> > > >
> > > > +Thomas.
> > >
> > > AIUI, these things are entirely separate. Exposing NOR flash via block
> > > I/O and disk I/O permits the standard partition driver and FAT
> > > filesystem driver to bind to it, so that you can have a standard FAT
> > > ESP on NOR flash. I don't this is related at all to the BootMonFs
> > > stuff
> >
> > If so, that's even sillier. If it has any business remaining
> > supported, that should be a separate driver consuming NorFlashDxe.
> >
> > And if ARM feels their platforms need it, they can write that driver.
> >
> > So how about we don't move it and just nuke the BlockIo/DiskIo bits?
> >
> > /
> >     Leif
> >
> I am little bit confused here, please confirm
> I have to copy “ArmPlatformPkg/Drivers/NorFlashDxe” to
> edk2-platforms/Platform/ARM/Drivers first and then rip out the block
> i/o
> and disk i/o parts to get StandaloneNorFlash driver? And retain
> “ArmPlatformPkg/Drivers/NorFlashDxe” as it is ?
>

No. The idea is to remove block i/o and disk i/o from the NOR flash
driver altogether, unless anyone has a compelling use case for them.

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